Search Engine Marketing, or SEM, is a way to help your website show up more often when people search for things online. It’s like putting up a big sign for your website on the internet’s busiest street! SEM includes two main parts: paying for ads to show up at the top of search results (like Google) and making your website better so that it naturally ranks higher in search results (this is called Search Engine Optimization, or SEO). By using SEM, you can make sure more people find and visit your website, which can help your business or blog become more popular.